Transfer-binder.



No. 775,104. PATENTED NOV. 15, 1904. T. R. EDDY.

TRANSFER BINDER.

APPLICATION FILED JAN.19.1903.

UNITED STATES Patented November 15, 1904.

PATENT OEEICE.

THOMAS R. EDDY, OF CHICAGO, ILLINOIS, ASSIGNOR TO TENGWVALL FILE &LEDGER COMPANY, OF CHICAGO, ILLINOIS, A CORPORA- TION OF ILLINOIS.

TRANSFER-BINDER.

SPECIFICATION forming part of Letters Patent No. 775,104, dated November15, 1904.

Application filed January 19, 1903. Serial No. 189,584. No model.)

To all whom it may concern.-

Be itknown that I, THoMAs R. EDDY, a resident of Chicago, Cookcounty,Illinois, have invented certain new and useful Improvements inTransfer-Binders, of which the following is a specification.

This invention relates to improvements in transfer or temporary bindersof that typein which a pair of binding-strips or cover members areunited by means of posts which extend through the sheets containedbetween the cover members, the invention relating more particularly tomechanism for adj ustably locking one cover member upon said posts andrelatively to the opposite cover member.

The salient objects of the invention are to provide a construction whichis capable of locking the two members together at any exact position ofadjustment required, to provide a construction which operates to lockthe movable member upon both posts of the cooperating membersimultaneously and likewise to release the samesimultaneously, toprovide a construction in which the locking is accomplished by bringingtension upon a flexible strap in such manner as to clamp the two ends ofthe straps to the respective posts, to provide a construction in whichthe locking mechanism is of the simplest form and reduced to a minimumnumber of parts, and in general to provide an improved mechanism of thecharacter referred to.

To the above ends the invention consists in the matters hereinafterdescribed, and more particularly pointed out in the appended claims, andthe invention will be readily understood from the following description,reference being had to the accompanying drawings, forming a partthereof, and in which Figure 1 is an edge elevation of the two backstrips of a temporary binder and the binding-posts connecting the same.Fig. 2 is a top plan view of the parts shown in Fig. 1, the lockingmechanism being shown in unlocked position in dotted lines. Fig. 3 is asectional view taken on line 3 3 of Fig. 1 and looking downwardly,showing the locking mechanism in the position assumed when locked.

In the drawings the skeleton frame only of a temporary binder is shown,which frame comprises the two back strips or clamping members 1 and 2and the posts 3 whereby the back strips are adjustably connected andupon which the sheets to be bound are impaled. Usually the back strips 1and 2 are inclosed in a leather binding and united with coverleaves bymeans of a flexible leather connection in a well-understood manner; butsome times the binder is used without covering or cover-leaves.

The back strip 9. may be of any suitable rigid construction adapted torigidly support the pair of posts 3. In the present instance thebase-sections 3 of said posts are shown as permanently united with theback strip 2, while the remaining portions of each post are composed ofa plurality of separable sections 3", such construction being alsocommon. The posts 3 are of uniform diameter throughout the principalparts of their length.

The back strip 1 comprises a pair of platelike strips t and 5, securedtogether in parallel relation and at a short distance apart by means ofa plurality of space-studs 6. Plates 4: and 5 are provided withregistering apertures suitably spaced to fit upon the posts 3.

7 designates a locking-strip, which in the preferred embodiment consistsof a strip of watch-spring or analogous spring metal and is arrangededgewise between the plates & and 5. The two end portions 8 and 8 of thestrip 7 are arranged to partially encircle the binding-posts 3, whileits intermediate portion 9 extends between the posts and adjacent to alocking-cam 10, rigidly mounted upon a rotatable stub shaft or shank 11,which has bearings at its upper and lower ends in the plates 4 and 5,respectively. The upper end of the shank 11 protrudes through and abovethe upper plate 4 and is squared or otherwise suitably formed, asindicated at 11, to receive the end of a key whereby it may bepositively rotated. The relative arrangement of said parts is such thatwhen the cam is rotated it operates to flex the locking-strip 9 at apoint between its ends, so as to shorten said lockingstrip, and thuscause the ends 8 and 8 thereof, which encircle the posts, to come intoclamp-' ing engagement with said posts. In the preferred embodimentillustrated the extreme ends of the locking-strip are engaged with fixedstuds 12, located adjacent to the proximatesides of the binding-posts 3,and the strip extends thence around the respective posts and in apractically direct line between the latter when in its unlockedposition. At that side of the locking-strip remote from the cam 10 andat some distance on each side from the latter the locking-strip issupported by means of studs 13 and 13, so that when the strip is flexedthe angle of flexure is confined to the relatively short space betweenthe two studs 13 nearest the locking-cam.

The connecting end of the cam 10 is suitably rounded so as to readilyslip upon the locking-strip after it has passed into engagement with thelatter, and in order to limit the extent of rotation of the cam in onedirection a stop-stud 1 1 is provided, which is so disposed as to arrestthe cam in a position in which the tension of the spring will tend tohold the cam in bearing with the stud, as indicated clearly in dottedlines in Fig. 3. This arrangement overcomes all tendency of themechanism to become unlocked accidentally, because the resilience of thelocking-strip will at all times tend to retain the cam in lookingposition.

I preferably employ a locking-strip of such character and thickness thatit possesses considerable stiffness, so that the turns 8 and 8, whichencircle the posts,tend to expand. The result is that the back strip 1as a whole is very firmly locked to the binding-posts, although it isprobable that even in a fulllocked position the encircling portions 8and 8 of the locking-strip do not absolutely conform to the exteriors ofthe posts. In any event it is found in practice that after thelocking-strip has been flexed sufliciently to clamp the posts veryfirmly there is still ample resiliency or elasticity in the mechanism asa whole to permit the locking-cam 10 to be carried slightly beyond thedead-center position and into the position shown in dotted lines in Fig.3. This characteristic is also of importance, since it insures areliablelocking action notwithstanding the posts may be slightlyirregular either as to size or shape. It will be obvious that the backstrip 1 may be locked upon the posts in any exact position of adjustmentso as to hold firmly any number of interposed leaves.

While I have herein shown and described what I deem to be a preferredembodiment of the invention, yet it will be obvious that the detailsthereof may be modified without departing from the invention. I do not,therefore, limit myself to the exact details shown, except to the extentthat they are made the subject of specific claims.

I claim as my invention 1. In a temporary hinder, the combination of aback strip provided with a post, and a second back strip apertured tofit upon said post, and means for adjustably locking said partstogether, comprising a strip of resilient metal mounted upon saidapertured member and having a part arranged to extend around thepost-aperture therethrough, means holding said strip, means to draw itinto forcible contact with the post, and means for holding said drawingmechanism in a position to exert tension upon said post.

2. In a temporary binder, the combination of a back strip provided witha post, a second back strip apertured to fit upon said post andcomprising a pair of platelike members spaced apart and rigidly united,and means for adj ustably locking said apertured member to said postcomprisinga resilient metal strip mounted between the two plates of theapertured member, and having a part arranged to encircle thepost-aperture therethrough; means holding the ends of the strip, andmeans for flexing the strip at a point between the held ends, for thepurpose set forth.

3. In a temporary binder, the combination of a back strip provided witha pair of parallel posts, a second back strip apertured to fit upon saidposts, and consisting of a pair of parallel plate members spaced apartand rigidly united, a ribbon-like strip of metal interposed edgevvisebetween said plate mem bers and having its ends arranged to extendaround the post-apertures and secured to fixed supports and itsintermediate portion arranged to extend between said post-apertures, atensioning-cam movably mounted adjacent to said intermediate portion ofthe lockingstrip and adapted to be shifted to flex said strip, and meansfor operating said cam.

41:. In a temporary binder, the combination of a post supporting memberprovided with a pair of parallel posts, a second member apertured to fitupon said posts and comprising a pair of parallel plates spaced apartand rigidly united, and means for adjustably locking said aperturedmember to the posts comprising a resilient metal strip interposededgewise between the plates of said apertured member, having its endportions arranged to extend around the post-apertures therein andsecured to fixed supports, and its intermediate portion arranged toextend between the posts and longitudinally of the member, a locking camjournaled to rotate between said plates and in position to engage andflex said intermediate portion of the locking-strip, and strip-supportslocated at each side of, and at adistance from the locking-cam,substantially as described.

5. In a temporary binder, the combination of a post supporting memberprovided with a pair of parallel posts, a second member apertured to fitupon said posts and comprising a pair of parallel plates spaced apartand rigidly united, and means for adjustably locking said aperturedmember to the posts comprising a resilient metal strip interposededgewise between the plates of said apertured member, having its endportions arranged to extend around the post-apertures therein andsecured to fixed supports, and its intermediate portion arranged toextend between the posts and longitudinally of the member, a locking-camjournaled to rotate between said plates and in THOMAS R. EDDY.

WVitnesses:

ALBERT H. GRAVES, FREDERICK G. GOODWIN.

